If the chromecast dongle is plugged into an HDMI port on the TV and its power cord is plugged into a USB port on the TV, can it stream content over a WiFi router if there is no other device such as a phone or tablet? Or is chromecast simply a way of displaying to the TV screen content that is being streamed to another device?

The TV does not have the Youtube TV app (too old).

  • Your second hypothesis. – user931000 Apr 24 '19 at 18:08

Chromecast streams its own media over Wifi from the internet but it needs a mobile device to initiate and control the stream (for example to stop, pause or skip).

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  • Thanks. I found a how-to page saying that it might be possible to control chromecast with the TV's remote using HDMI-CEC (if the TV supports that feature and "Deck Control"). – Tim Apr 24 '19 at 20:25
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    True, most modern TVs support this via the TV remote. You still need a mobile device to tell the Chromecast what to stream. – StarCat Apr 25 '19 at 15:57

Content is streamed to not from the dongle.

And you always need another device, typically a phone or tablet but also regular PCs with Chrome and an extension, to stream to and "control" the dongle.

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  • Thanks. I thought it might work like FireTV. – Tim Apr 24 '19 at 18:35
  • FireTV is a media player, Android based and with its own remote control. It's a full featured Android computer, unlike the Chromecast . – user931000 Apr 26 '19 at 7:37

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